C - Chemistry – Metallurgy – 25 – C
Patent
C - Chemistry, Metallurgy
25
C
C25C 3/08 (2006.01)
Patent
CA 2305581
Disclosed is an improved carbonaceous material suitable for use as a cathode (16) in an aluminum producing electrolytic cell, the cell bottom (10) using an electrolyte comprised of sodium containing compounds. The carbonaceous material is comprised of carbon and a reactive compound capable of suppressing the formation or accumulation of sodium cyanide during operation of the cell, of reacting with sodium to reduce problems associated with sodium intercalation, and of reacting with one of titanium or zirconium to form titanium or zirconium diboride during operation of the cell to produce aluminum (22).
L'invention concerne un matériau carboné amélioré apte à une utilisation comme cathode (16) dans une cuve d'électrolyse de production d'aluminium, le fond (10) de la cuve utilisant un électrolyte comprenant des composés contenant du sodium. Le matériau carboné comprend du carbone ainsi qu'un composé réactif capable de supprimer la formation ou l'accumulation de cyanure de sodium pendant l'exploitation de la cuve, de réagir avec du sodium afin de réduire les problèmes associés à l'intercalation du sodium, et de réagir avec le titane et/ou le zirconium pour former du diborure de titane ou de zirconium pendant l'exploitation de la cuve dans la production d'aluminium (22).
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